Has this bug been fixed in Ubuntu 18.04? I seem to have the same issue (kernel 4.15.0-34).
I do not have any SMB drives mounted, yet old connections from several months ago are open and still flooding 445: > sudo netstat -tnp | grep 445 tcp 0 0 x.x.x.x:54508 a.a.a.a:445 ESTABLISHED - tcp 0 0 x.x.x.x:60350 b.b.b.b:445 ESTABLISHED - tcp 0 0 x.x.x.x:56534 c.c.c.c:445 ESTABLISHED - -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1686099 Title: connection flood to port 445 on mounting cifs volume under kernel Status in Linux: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Xenial: Fix Committed Status in linux source package in Yakkety: Fix Released Status in linux source package in Zesty: Fix Committed Bug description: This is identical to the bug reported on the Debian kernel list, only I'm running 4.4.0, not 4.[89].0 After about 15 mintues, the cifsd daemon starts flooding echo requests on port 445 to the windows server causing a constant 1MB/s load (around 10,000 packets per second) that eventually leads to system instability that forces a reboot to correct. This is repeatable and as far as I know started about a week ago (possibly with the installation of 4.4.0-75). https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=856843 To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1686099/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
